Decipher the mysterious cry that never stops the Earth

Scientists have finally found a solution to the "uu" sounds that never stop on Earth.

Solution to the ceaseless cry of the Earth

The new study, published on the Livescience website, offers solutions to mysterious, never-ending cries in the Earth , which could make our planet fall into severe "tinnitus".

Scientists have long recognized that earthquakes can cause large echoes to last for several days or even months.

In the late 1990s, seismologists discovered in Earth always existed with vibrations that did not stop even when no earthquake occurred. This phenomenon is also often referred to as microseismic - a microscopic earthquake that humans can hardly perceive.

However, recent research by experts has shown that ocean waves are the culprits causing these mysterious shocks.

The hypothesis suggested that vibrations generated by giant ocean waves could lead down to the seabed.

Large waves make the Earth "sway" as if they are tumbling the geological layer on the sea floor or the underwater shelf. Another idea is that, waves hit each other so it caused such a commotion.

However, all these hypotheses still cannot explain the cause of the strange sound tremor in the Earth.

The new study incorporates all the hypotheses already, building a model to monitor the microseismic signal changes along the seabed movement.

Accordingly, scientists discovered, the collision of ocean waves to produce seismic waves takes only 13 seconds or less to complete a ripple.

When studying the slower wave, they found that ocean waves moving below the seabed can produce seismic waves with frequencies between 13 and 300 seconds. Therefore, most of the mysterious cry in the Earth will come from long waves of "moving" on the ocean floor.

Oceanographer - the main author of the study - said Fabrice Ardhuin: "This research can help scientists gradually improve the map of the inner layers of the Earth".